ChatGPT and Codex keep running. Only the GPT-5.5 model retires from ChatGPT, ChatGPT Work and Codex on all plans on 2026-10-14: OpenAI names GPT-6 Sol as the replacement on Plus, Pro, Business, Enterprise and Edu plans and GPT-6 Luna on Free and Go plans. The OpenAI API is not affected. Source ↗